Whether it is ovulation bleeding can be determined by the amount of bleeding, bleeding time, and changes in leukorrhea. Ovulation bleeding is caused by the drop of estrogen level in the body, which leads to the shedding of the uterine lining and triggers a short, small amount of bleeding. 1. Bleeding amount: If you are bleeding during ovulation, the amount of bleeding is very small. Usually, you will see it when you wipe with tissue paper when you go to the toilet, or it may stick a little bit on your underwear, and it will not be as much as the bleeding during menstruation. 2. Bleeding time: Ovulation bleeding usually occurs between two menstrual periods, and the bleeding time is 2~3 days. 3. Leukorrhea change: the leukorrhea during ovulation is transparent and may be accompanied by blood. Ovulation bleeding is a normal phenomenon, coitus is not recommended, you need to pay attention to the hygiene of private parts. If there is non-ovulatory bleeding, it is recommended to go to the hospital to get a clear diagnosis.